How to remove cancel jailbreak?

pidmopidmo Level 1
edited January 5 in ROG Phone

Hi, i think by updating my rog phone to android 9, Asus used a jailbreak to do it. This means a security key generator won't work as it says the phone is jailbreakes. What is jailbreak? I used another program which says it not rooted. Do I have to reinstall android 8 on the phone again to get rid off the jailbreak. Hope someone has a good answer. Thanks

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